<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <h1>接收处理xml数据</h1>
    <button>点击我获取xml数据</button>
    <script>
      let btn = document.querySelector("button");
      btn.onclick = function () {
        let xhr = new XMLHttpRequest();
        xhr.open("get", "/getxml");
        xhr.timeout = 2000;
        xhr.ontimeout = function () {
          alert("超时啦");
        };

        xhr.send();
        xhr.onload = function () {
          if (xhr.status >= 200 && xhr.status < 300) {
            console.log(xhr.responseXML);
            let res = xhr.responseXML.querySelector("book1 name").innerHTML;
            console.log(res);
          }
        };
      };
    </script>
  </body>
</html>
